2006 Mercedes-Benz S500 Questions

All 2006 Mercedes-Benz S500 Questions

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I have a 2006 Mercedes S500 doors nor trunk responding to key or door switch lock and unlock command. Head rest non responsive also. Automatic trunk assist pump in trunk has fluid but makes no sound while pressing but...
Trunk opens normally with key fob or door switch but only stays open for 5 to 10 seconds then closes on its own. First reasonably slow/soft then quite firmly when the trunk assist engages.
locks on all doors are functional,key fob works on all doors but right rear will not open.
An error message came on, something about needing to format something.
Have imported it from another country and the comand controls the clock by GPS. So would like to adjust the clock to my time zone. I can't use the Navi.
Regular oil & Filter change